H8HK SERIES ELECTRIC HEATER KIT · 2021. 1. 7. · NOTE: For 2-tiered electric heater kits, remove...
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INSTALLATION IN STANDARD & VARIABLE SPEED INDOOR AIR HANDLERS H8HK SERIES ELECTRIC HEATER KIT IMPORTANT ATTENTION INSTALLERS: These instructions are primarily intended to assist qualified individuals experienced in the proper installation of heating and/or air conditioning appliances. Some local codes require licensed installation/service personnel for this type equipment. All installations must be in accordance with these instructions and with all applicable national and local codes and standards. Read these instructions thoroughly before starting the installation. Follow all precautions and warnings contained within these instructions and on the unit. The instructions included with this keater kit are for installations in air handlers only. DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE. INSTALLATION INSTRUCTIONS
Transcript of H8HK SERIES ELECTRIC HEATER KIT · 2021. 1. 7. · NOTE: For 2-tiered electric heater kits, remove...
INSTALLATION IN STANDARD & VARIABLE SPEED INDOOR AIR HANDLERS
H8HK SERIES ELECTRIC HEATER KIT
IMPORTANTATTENTION INSTALLERS:
These instructions are primarily intended to assist qualified individuals experienced in the proper installation of heating and/or air conditioning appliances. Some local codes require licensed installation/service personnel for this type equipment. All installations must be in accordance with these instructions and with all applicable national and local codes and standards.
Read these instructions thoroughly before starting the installation. Follow all precautions and warnings contained within these instructions and on the unit. The instructions included with this keater kit are for installations in air handlers only.
DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
INSTALLATION INSTRUCTIONS
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IMPORTANT SAFETY INFORMATIONINSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.
WARNING:ELECTRICAL SHOCK, FIRE OR
EXPLOSION HAZARDFailure to follow safety warnings exactly could result in serious injury or property damage.
Improper servicing could result in dangerous operation, serious injury, death or property damage.• Before servicing, disconnect all electrical
power to the unit.• When servicing controls, label all wires prior
to disconnecting. Reconnect wires correctly.• Verify proper operation after servicing.
GENERAL INFORMATIONAbout the heater kitH8HK Series electric heater kit is approved for field installation in B5, B6, MB7, HMG, HMB, & HCG, air handlers. All sizes are available with factory-provided circuit-breakers for short circuit protection and to provide a disconnecting means. Also available are 5, 8, and 10 kw electric heater kits without circuit-breakers. Refer to the National Electric Code (ANSI/NFPA 70) and applicable local codes for over-current protection and disconnect requirements.
NOTES:• The 20, 24, and 29 kw electric heater kits are NOT approved
for installation in A-cabinet air handlers. The 24 & 29 Kw kits are for B6, MB7, HMG, HMB, & HCG C-cabinet air handlers. For all heater kit applications, use Table 1, Table 2, Table 3 (page 6), and Figure 1 (page 5).
• These instructions are written assuming the air handler is in the upflow position (outlet facing up). For horizontal and downflow applications, it is recommended that the electric heater kit be installed prior to installation of the air handler.
• Use caution when handling or installing this component. Personal injury can occur from sharp metal edges present in all sheet metal constructed equipment.
• 460V heater kits are only approved for use in the 460V MB7 (C-cabinet) air handler.
TABLE OF CONTENTSIMPORTANT SAFETY INFORMATION .................... 2
GENERAL INFORMATION ....................................... 2About the heater kit............................................... 2Clearances to Combustibles ................................. 3
Standard Air Handlers ........................................ 3Variable Speed Air Handlers ........................... 3
ELECTRICAL SUPPLY ............................................. 3Power Wiring......................................................... 3
ELEMENT INSTALLATION ....................................... 3Electric Heater Kits with Circuit Breakers ............. 3
5, 8, & 10 kw Electric Heater Kits ....................... 415, 20, 24, & 29 kw Electric Heater Kits ............. 43-Phase 9 & 15 kw electric heater kits ............... 4Line Cover .......................................................... 4
Electric Heater Kits without Circuit Breakers ........ 4Staged Heat .......................................................... 4
MOTOR SPEED SELECTION ................................... 4Standard Air Handlers .......................................... 4
Standard 3 Speed Motors ................................... 4Standard C-Cabinets .......................................... 4
Variable Speed Air Handlers ................................ 4
FIGURES & TABLES ................................................ 5Figure 1. Heater Kit Identification Code .............. 5Figure 2. Sample Installation .............................. 5Figure 3. Installation of Circuit Breakers ............. 5Figure 5. Line Cover Installed ............................. 5Figure 4. Line Cover ........................................... 5Figure 6. Circuit Breaker Bracket with
Terminal Block Installed ....................... 5Table 1. Blower Heating Speed ........................... 6Table 2. HMG Cabinet Sizes ............................... 6Table 3. Electrical Ratings ................................... 6Figure 7. H8HK Heater Kit Installation ................ 6
Wiring Diagrams ................................................... 7Figure 8. Single Phase, 3kW & 5 kw W.D............ 7Figure 9. Single Phase, 8kw & 10 kw W.D. ......... 8Figure 10. Single Phase, 15 kw W.D. .................. 9Figure 11. Single Phase, 20 kw WD ................... 10Figure 12. Single Phase, 25 kw WD ................... 11Figure 13. Single Phase, 30 kw W.D. ................. 12Figure 14. 3-Phase, 9kw & 15kw W.D. ................ 13Figure 15. 3-Phase, 460V W.D. ........................... 14
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Clearances to CombustiblesStandard Air HandlersAll installations of H8HK electric heater kits in standard air handlers are approved for zero-clearance to combustibles when the minimum electric heat airlfow is set as directed in these instructions.
Variable Speed Air HandlersAll installations of H8HK electric heater kits in variable speed air handlers are approved for zero-clearance to combustibles when the minimum electric heat airflow is set as directed in these instructions.
ELECTRICAL SUPPLY• All electrical connections must be in compliance with all
applicable local codes with the current revision of the National Electric Code (ANSI/NFPA 70). For Canadian installations the electrical connections and grounding shall comply with the current Canadian Electrical Code (CSA C22.1 and/or local codes).
• If the air handler was previously installed without electric heat, the existing supply wiring may not be sufficient to carry the increased load. If installing electric heat in the air handler, the supply wiring can be aluminum or copper. The supplied circuit breakers and terminal blocks are approved for either wire type. Make sure to follow all of the rating information on the circuit breaker or terminal block and that the supply wiring is sized according to the current NEC codes and any other state or local codes. See the rating label or Table 3 (page 6) for minimum circuit ampacities and maximum overcurrent protection.
• All heater kits are supplied from the factory configured for use with one or more supply circuits. 5 & 10 kw heater kits 10 are configured for use with a single supply circuit (Circuit A). 15 & 20 kW heater kits are configured for use with 2 circuits (Circuit A & Circuit B). 24 & 29 kW heater kits are configured for use with 3 circuits (Circuit A, Circuit B, & Circuit C). See Table 3 for additional information. NOTE: If a single supply is desired, accessory kit #913874 is required to convert to single circuit connection.
Power WiringAll wiring must comply with the current revision of the National Electric Code and must be sized for the minimum ampacities as listed on the unit data label or in Table 3. Refer to Figure 8 (page 7), Figure 9 (page 8), Figure 10 (page 9), Figure 11 (page 10), Figure 12 (page 11), Figure 13 (page 12), & Figure 14 (page 13) for proper connections.
If a single circuit adaptor kit is used it may need to be re-configured for some applications. Remove the single circuit adaptor kit cover and verify that the lugs are configured correctly for the application. If the lugs are not configured for the application, reference the instructions included with the kit and modify the configuration. Install the single circuit adaptor kit (if used) in the line side (“on” end) of the circuit breakers. Tighten the lugs securely (45 in-lbs recommended).
Connect the supply wiring to the circuit breaker(s), single circuit adaptor kit, or terminal block. Tighten the lugs securely.
When using multiple supply circuits verify that the supply sized for circuit “A” is connected to the circuit breaker that is connected to the top element assembly.
Install metal circuit breaker line cover on the left side of the circuit breaker to cover the supply wires.
ELEMENT INSTALLATION1. Set the thermostat to the lowest temperature setting.2. Turn off all electrical power to the air handler.3. Remove the upper access door from the air handler.4. Remove the screws securing the upper element close-off
plate from the back of the air handler control box.5. Remove the element close-off plate and set the screws
aside. Do not discard the screws. NOTE: For 2-tiered electric heater kits, remove two close-off plates. For 3-tiered electric heater kits remove all 3 close-off plates. The close off plates should be removed from the bottom up in ascending order.
6. Insert the element assembly into the opening in the air handler control box being careful not to damage the element wire or the ceramic element supports. NOTE: Heating element alignment rods will slide into alignment holes in the back of the air handler element box.
7. Secure the element assembly to the back of the air handler control box with the screws removed in step 4.• For 15, 20, 24, or 29 kw Heater Kits the AC relay bracket
also needs to be installed.a.) Place the AC relay bracket below the bottom element
plate so the back edge is behind the element plate. b.) Line up the slot hole on the bracket with the half hole
on the element plate. See Figure 7 (page 6).
8. Single Stage Board: Connect the W wires from the control board (white), AC relay (white) and the W wire from the thermostat with one of the supplied wire nuts. Connect the C wires from the board (grey), AC relay (grey) and C wire (if supplied) from the thermostat with one wire nut.
Two-Stage Board: Place the W1 wire from the thermostat and the white wire from the AC relay under the W1 screw terminal on the board. Place the C wire from the thermostat (if present) and the grey wire from the AC relay underneath the C terminal on the control board.
9. Connect the 2-Pin Power plug from the element assembly into the unit's 2-Pin power plug. Connect the 7-Pin Harness from the element assembly to the unit's circuit board.
NOTE: A wiring diagram and a rating label are supplied with the electric heater kit. Affix the wiring diagram to the blower housing.
• When installing the electric heater kit into a standard air handler, affix the supplied rating label over the electrical data section of the air handler unit data label located on the lower access door.
• When installing the electric heater kit into a variable speed air handler, the rating label supplied with the kit will NOT be used. Check the appropriate block on the air handler ratings label located on the lower access door.
8. Install the circuit breaker bracket inside of the air handler. Position the tab on the bottom of the bracket into the slot of the control panel box. See Figure 2 (page 5) for proper location of bracket.
9. Slide the bracket forward and align the screw holes with the holes in the bottom of the control panel box. Secure the bracket to the air handler with the supplied screws.
Electric Heater Kits with Circuit BreakersNOTE 1: Circuit breakers supplied with the H8HK electric heater kit are for short-circuit protection of the internal wiring and to serve as a unit disconnect. They DO NOT provide over-current protection of the supply wiring. Over-current protection of the supply wiring must be provided at the
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distribution panel and sized as shown in Table 3 (page 6) or the unit data label, and in accordance with the NEC and all applicable local codes.
NOTE 2: In some cases, the over-current protection specified in Table 3 (or the unit data label) is less than the 60 amp rating of the circuit breakers used in the H8HK electric heater kit. This difference may occur if the function of the over-current protection required at the distribution panel (field supplied) and the function of the circuit breakers in the H8HK electric heater kit are different.
5, 8, & 10 kw Electric Heater Kits1. Snap the circuit breaker onto the circuit breaker bracket.
The circuit breaker must be positioned with the 1/4" tab terminals to the right as shown in Figure 3 (page 5).
2. Remove the lower circuit breaker knockout from the air handler upper access door.
15, 20, 24, & 29 kw Electric Heater KitsNOTE 1: The heavy red and black supply leads are bundled by circuit with wire ties at the factory. The bundle coming from the top element tier is circuit “A”.
NOTE 2: The element assembly is right-side-up when the limits are on the right side). The bundle coming from the second element tier is circuit “B”. The bundle coming from the bottom element tier is circuit "C".
1. Snap the circuit breaker onto the circuit breaker bracket. The circuit breaker must be positioned with the 1/4" tab terminals to the right as shown in Figure 3 (page 5)
2. Remove all necessary circuit breaker knockouts in the air handler upper access door.
3-Phase 9 & 15 kw electric heater kits1. Snap the 3-pole circuit breaker onto the circuit breaker
bracket. The circuit breaker must be positioned with the 1/4" tab terminals to the right as shown in Figure 3 (page 5).
2. Remove the bottom two circuit breaker knockouts in the air handler upper access door.
Line CoverHeater Kits with circuit breakers are supplied with a line cover shown in Figure 4 (page 5). The line cover is required by code in order to protect installers from the line/supply wiring. The line cover should be installed as shown in Figure 5 (page 5).
Electric Heater Kits without Circuit Breakers1. Attach the supplied power terminal block to the circuit
breaker bracket with the supplied screws as shown in Figure 6 (page 5).
2. Using the 1/4" terminals, connect the red supply wire(s) from the element assembly to one pole of the terminal block and connect the black wires to the other pole.
Staged HeatAll Single-phase heater kits are internally staged using B5, B6, HMG and HMB air handler circuit board logic. B5 air handlers may stage the heater kit with a slow or fast timed option. B6 single stage air handlers will not stage the heater kit. B6 two-stage air handlers may stage the heat Kw turned on with either a low or high heat call. All 3-phase heater kits are not equipped for internal staging. Refer to the installation instructions supplied with the air handler for additional staging information.
MOTOR SPEED SELECTIONStandard Air HandlersThe blower speed is preset at the factory for operation at the same speed for heating and cooling, by using the blower motor jumpering terminal on the blower motor and connecting it to the desired speed with both the red and black wires connected to the jumpering terminal. For optimum system performance and comfort, it may be necessary to change the factory set speed. To change the blower speed:
WARNING:To avoid the risk of electric shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service. The unit may have more than one electrical power supply.
1. Disconnect all electrical power to the unit and remove the upper door.
2. Remove the black and red wires from the blower motor jumping terminal.
3. Connect the heating speed wire (red) and the cooling speed wire (black) to the desired blower speed marked on the terminal block of the blower motor. If needed, re-use the motor jumping terminal.
IMPORTANT NOTEAfter changing the blower speed setting, make sure to bundle and insulate any unused blower motor leads so that they will not make contact with the air handler cabinet or non-insulated live parts.
Standard 3 Speed MotorsTerminal 4 = Hi speedTerminal 5 = Med speedTerminal 6 = Low speed
Standard C-CabinetsTerminal M1 = Low speedTerminal M2 = Medium Low speedTerminal M3 = Medium speedTerminal M4 = Medium Hi speedTerminal M5 = Hi speed.
High speed operation may be required when using a 20, 24, or 29 kw electric heater kit in a downflow application. Also see Clearances to Combustibles (page 3).
4. Replace the upper door and secure it to the unit.5. Restore power to the unit.
Variable Speed Air HandlersThe minimum electric heat airflow is selected by setting switches on the air handler circuit board. Selecting the minimum electric heat airflow sets the minimum air flow that will be produced whenever electric heater kits are energized. When the electric heater kits are energized along with a heat pump, the airflow may be higher depending on the basic cooling/heat-pump airflow setting. Reference the installation instructions supplied with the air handler for additional airflow information.
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Figure 5. Line Cover Installed
Figure 2. Sample Installation(shown with access door removed)
2 - Pin Connector
7 - Pin Connector
Circuit BreakerBracket
Figure 4. Line CoverFigure 3. Installation of Circuit Breakers
FIGURES & TABLES
Figure 6. Circuit Breaker Bracket with Terminal Block Installed
Figure 1. Heater Kit Identification Code
H HK 020 - H 1Product Type:
H-Heater
Product Identifier:HK - Heater Kit
Generation:6 - Sixth Series
No. of Breakers
Electric Code:H=240 - 1 - 60Q=208 / 240 - 3 - 60S=480 - 3 - 60
StageSequencer
005 - 5Kw008 - 8Kw009 - 9Kw
010 - 10Kw
015 - 15Kw020 - 20Kw024 / 025 - 25Kw029 / 030 - 30Kw
Primary Capacity:
8 2
6
Table 2. HMG Cabinet Sizes
MODEL CABINET SIZE
H(M,C)G024 AH(M,C)G030 AH(M,C)G036 BH(M,C)G042 BH(M,C)G048 CH(M,C)G060 C
MODELH8HK-
CABINETSIZE
MINIMUM REQUIRED BLOWERHEATING SPEED
A B C UPFLOW HORIZONTAL DOWNFLOW
005H X X X LOW LOW LOW008H X X X LOW LOW LOW010H X X X LOW LOW LOW015H X X X LOW LOW MED020H X X LOW LOW HIGH024H X X MED MED HIGH029H X MED MED N/A009Q X X LOW LOW LOW015Q X X LOW LOW MED009S X 1150 CFM 1150 CFM 1150 CFM015S X 1400 CFM 1400 CFM 1400 CFM
(1) Only on *30 (2.5 Ton) model air handlers
Table 1. Blower Heating Speed
Table 3. Electrical Ratings
MODELNUMBER
H8HK-VOLTAGE KW
STANDARD AIR HANDLER(A & B SIZE)
VARIABLE SPEED & STANDARD AIR HANDLER(C SIZE)
MINIMUM CIRCUITAMPACITY
MAX. OVER-CURRENTCIRCUIT AMPACITY
MINIMUM CIRCUITAMPACITY
MAX. OVER-CURRENTCIRCUIT AMPACITY
CIR
CU
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CIR
CU
IT B
CIR
CU
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SIN
GL
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IRC
UIT
CIR
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CIR
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IT B
CIR
CU
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SIN
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IRC
UIT
CIR
CU
IT A
CIR
CU
IT B
CIR
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SIN
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UIT
CIR
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CIR
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IT B
CIR
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005H-XX 240 4.8 - - - 30 - - - 30 - - - 32 - - - 35008H-XX 240 7.5 - - - 45 - - - 45 - - - 47 - - - 50010H-XX 240 9.6 - - - 55 - - - 60 - - - 57 - - - 60015H-XX 240 14.4 50 30 - 80 60 30 - 80 50 32 - 82 60 35 - 90020H-XX 240 19.2 55 50 - 105 60 60 - 110 57 50 - 107 60 60 - 110024H-XX 240 24.0 - - - - - - - - 50 50 32 132 60 60 35 150029H-XX 240 28.8 - - - - - - - - 57 50 50 157 60 60 60 175
005H-XX 208 3.6 - - - 27 - - - 30 - - - 29 - - - 30008H-XX 208 5.6 - - - 39 - - - 40 - - - 42 - - - 45010H-XX 208 7.2 - - - 49 - - - 50 - - - 51 - - - 60015H-XX 208 10.8 44 27 - 70 45 30 - 70 44 29 - 72 45 30 - 80020H-XX 208 14.4 49 44 - 92 50 45 - 100 51 44 - 94 60 45 - 100024H-XX 208 18.0 - - - - - - - - 44 44 29 116 45 45 30 125029H-XX 208 21.6 - - - - - - - - 51 44 44 137 60 45 45 150
009Q-XX 240 9.0 - - - 32 - - - 35 - - - 34 - - - 35015Q-XX 240 14.4 - - - 48 - - - 50 - - - 51 - - - 60009Q-XX 208 6.8 - - - 29 - - - 30 - - - 31 - - - 35015Q-XX 208 10.8 - - - 43 - - - 45 - - - 45 - - - 45
009S-XX 460 - - - - - - - - - - - 19 - - - 20015S-XX 460 - - - - - - - - - - - 28 - - - 30
*Blower motor amps assumed to be highest in each air handler family.
Line up the slot hole on thebracket with the half hole on
the element plate Place the AC relaybracket behind theelement plate.
Figure 7. H8HK Heater Kit Installation
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Figure 8. Single Phase, 3kW & 5 kw W.D.(Air Handler with Circuit Breaker(s))
21
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Figure 9. Single Phase, 8kw & 10 kw W.D.(Air Handler with Circuit Breaker(s))
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aced
with
wir
ing
mat
eria
l of t
he
s
ame
gaug
e si
ze a
nd te
mpe
ra-t
ure
ratin
g.2.
The
inst
alla
tion
of th
is h
eate
r ki
t may
req
uire
a c
hang
e in
the
blo
wer
spe
ed ta
p co
nnec
tion.
See
Inst
alla
tion
In
stru
ctio
ns fo
r de
tails
.3.
Use
cop
per
cond
ucto
rs w
ith a
min
imum
tem
pera
ture
rat
ing
of 6
0°C
for
supp
ly c
onne
ctio
ns.
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
15kW
, 240
VA
C, 1
-Ph
ase
Ele
ctri
c H
eate
r K
it
H8H
K01
5H-2
1 (w
ith
cir
cuit
bre
aker
)
7114
35C
(Rep
lace
s 71
1435
B)
06/1
7
WIR
ING
DIA
GR
AM
Figure 10. Single Phase, 15 kw W.D.(Air Handler with Circuit Breaker(s))
10
Figure 11. Single Phase, 20 kw WD(Air Handler with Circuit Breaker(s))
BLA
CK
12
RE
D
5B
RO
WN
GR
EY
OR
AN
GE
BLU
E
YE
LLO
W
21 3 4
ELE
ME
NT
LIM
ITA
C R
ELA
YD
C R
ELA
Y
CIR
CU
ITB
RE
AK
ER
(Circ
uit b
reak
erm
odel
s on
ly)
SU
PP
LY V
OLT
AG
E
CO
NN
EC
T T
O C
ON
CO
NT
RO
L B
OA
RD
CO
NN
EC
T T
O W
1 O
NC
ON
TR
OL
BO
AR
D
2-P
IN
PO
WE
R P
LUG
7-P
IN P
LUG
B
LAC
K
BLA
CK
RE
D
RE
D
RE
D
RE
D
GR
EY
WH
ITE
BLA
CK
BLA
CK
RE
D
RE
D
GREY
GREY
WHITE
GREY
GREY
WHITE
BLA
CK
RE
D R
ED
BLA
CK
RE
D
BLA
CK
RE
D
GREY
RE
D R
ED
GREY
WHITE
BLA
CK
20 k
W, 2
40 V
AC
, 1-P
has
e E
lect
ric
Hea
ter
Kit
H
8HK
020H
-21
(wit
h c
ircu
it b
reak
er)
NO
TE
S
1. I
f an
y o
f th
e o
rig
inal
wir
e su
pp
lied
wit
h t
his
u
nit
mu
st b
e re
pla
ced
, it
mu
st b
e re
pla
ced
w
ith
wir
ing
mat
eria
l of
the
sam
e g
aug
e si
ze
and
tem
per
atu
re r
atin
g.2.
Th
e in
stal
lati
on
of
this
hea
ter
kit
may
req
uir
e a
chan
ge
in t
he
blo
wer
sp
eed
tap
co
nn
ecti
on
. S
ee In
stal
lati
on
Inst
ruct
ion
s fo
r d
etai
ls.
3. U
se c
op
per
co
nd
uct
ors
wit
h a
min
imu
m
tem
per
atu
re r
atin
g o
f 60
°C f
or
sup
ply
co
nn
ecti
on
s.
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
7114
36C
(Rep
lace
s 71
1436
B)
06/1
7
WIR
ING
DIA
GR
AM
11
Figure 12. Single Phase, 25 kw WD(Air Handler with Circuit Breaker(s))
BLA
CK
12
RE
D
5B
RO
WN
GR
EY
OR
AN
GE
BLU
E
YE
LLO
W
21 3 4
ELE
ME
NT
LIM
ITA
C R
ELA
YD
C R
ELA
Y
CIR
CU
ITB
RE
AK
ER
(Circ
uit b
reak
erm
odel
s on
ly)
SU
PP
LY V
OLT
AG
E
CO
NN
EC
T T
O C
ON
CO
NT
RO
L B
OA
RD
CO
NN
EC
T T
O W
1 O
NC
ON
TR
OL
BO
AR
D
6W
HIT
E
2-P
IN
PO
WE
R P
LUG
7-P
IN P
LUG
BLA
CK
BLA
CK
RE
D
RE
D
RE
D
RE
D
GR
EY
WH
ITE
BLA
CK
BLA
CK
RE
D R
ED
GREY
GREY
WHITE
GREY
GREY
WHITE
BLA
CK
RE
D R
ED
BLA
CK
RE
D
BLA
CK
RE
D
GREY
RE
D R
ED
GREY
WHITE
BLA
CK
BLA
CK
RE
D R
ED
RE
D
BLA
CK
GREY
WHITE
GREY
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
NO
TE
S
1. I
f an
y o
f th
e o
rig
inal
wir
e su
pp
lied
wit
h t
his
u
nit
mu
st b
e re
pla
ced
, it
mu
st b
e re
pla
ced
w
ith
wir
ing
mat
eria
l of
the
sam
e g
aug
e si
ze
and
tem
per
atu
re r
atin
g.2.
Th
e in
stal
lati
on
of
this
hea
ter
kit
may
req
uir
e a
chan
ge
in t
he
blo
wer
sp
eed
tap
co
nn
ecti
on
. S
ee In
stal
lati
on
Inst
ruct
ion
s fo
r d
etai
ls.
3. U
se c
op
per
co
nd
uct
ors
wit
h a
min
imu
m
tem
per
atu
re r
atin
g o
f 60
°C f
or
sup
ply
co
nn
ecti
on
s.
25kW
, 24
0 VA
C,
1-P
has
e E
lect
ric
Hea
ter
Kit
H
8HK
024H
-31
(wit
h c
ircu
it b
reak
er)
7114
37C
(Rep
lace
s 71
1437
B)
06/1
7
WIR
ING
DIA
GR
AM
12
BLA
CK
12
RE
D
5B
RO
WN
GR
EY
OR
AN
GE
BLU
E
YE
LLO
W
21 3 4
ELE
ME
NT
LIM
ITA
C R
ELA
YD
C R
ELA
Y
CIR
CU
ITB
RE
AK
ER
(Circ
uit b
reak
erm
odel
s on
ly)
SU
PP
LY V
OLT
AG
E
CO
NN
EC
T T
O C
ON
CO
NT
RO
L B
OA
RD
CO
NN
EC
T T
O W
1 O
NC
ON
TR
OL
BO
AR
D
6W
HIT
E
2-P
IN
PO
WE
R P
LUG
7-P
IN P
LUG
7V
IOLE
T
BLA
CK
BLA
CK
RE
D
RE
D
RE
D
RE
D
GR
EY
WH
ITE
BLA
CK
BLA
CK
RE
D
RE
D
GREY
GREY
WHITE
GREY
GREY
WHITE
BLA
CK
RE
D R
ED
BLA
CK
RE
DB
LAC
K
RE
D
GREY
RE
D R
ED
GREY
WHITE
BLA
CK
BLA
CK
RE
D R
ED
RE
DB
LAC
K
GREY
WHITE
GREY GREY
GREY
WHITE
RE
DB
LAC
K
BLA
CK
RE
D R
ED
7114
38C
(Rep
lace
s 71
1438
B)
06/1
7
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
30kW
, 24
0 VA
C,
1-P
has
e E
lect
ric
Hea
ter
Kit
NO
TE
S
1. I
f an
y o
f th
e o
rig
inal
wir
e su
pp
lied
wit
h t
his
u
nit
mu
st b
e re
pla
ced
, it
mu
st b
e re
pla
ced
w
ith
wir
ing
mat
eria
l of
the
sam
e g
aug
e si
ze
and
tem
per
atu
re r
atin
g.2.
Th
e in
stal
lati
on
of
this
hea
ter
kit
may
req
uir
e a
chan
ge
in t
he
blo
wer
sp
eed
tap
co
nn
ecti
on
. S
ee In
stal
lati
on
Inst
ruct
ion
s fo
r d
etai
ls.
3. U
se c
op
per
co
nd
uct
ors
wit
h a
min
imu
m
tem
per
atu
re r
atin
g o
f 60
°C f
or
sup
ply
co
nn
ecti
on
s.
H8H
K02
9H-3
1 (w
ith
cir
cuit
bre
aker
)
WIR
ING
DIA
GR
AM
Figure 13. Single Phase, 30 kw W.D.(Air Handler with Circuit Breaker(s))
13
7114
39B
(Rep
lace
s 71
1439
A)
06/1
7
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
WIR
ING
DIA
GR
AM
H8H
K 3
-Ph
ase
Ele
ctri
c H
eate
r K
it, 2
08/2
40V
NO
TE
S:
1) T
he
blo
wer
mo
tor
spee
d t
ap c
on
nec
tio
n m
ay n
ot
no
t b
e as
sh
ow
n. S
ee t
he
Inst
alla
tio
n In
stru
ctio
ns.
2) D
isco
nn
ect
all p
ow
er b
efo
re s
ervi
cin
g.
3) T
ran
sfo
rmer
may
hav
e a
du
al v
olt
age
pri
mar
y ta
p. M
atch
th
e ta
p p
osi
tio
n w
ith
th
e su
pp
ly v
olt
age
use
d.
4) I
f th
e In
tern
al w
irin
g is
rep
lace
d,u
se o
nly
105
°C c
op
per
wir
e o
f th
e sa
me
gau
ge.
CIR
CU
IT
BR
EA
KE
RS
SU
PP
LYV
OLT
AG
EG
RO
UN
D
LIM
IT
ELEM
ENT
1EL
EMEN
T 1
ELEM
ENT
2EL
EMEN
T 2
ELEM
ENT
3
ELEM
ENT
3
CO
M
NO
RELA
Y
L1
L
1
L2
L
2
L3
L
3
CO
NTA
CTO
R
Fro
m in
do
or
air h
and
ler
circ
uit
bo
ard
13
45
67
2
24V
Fro
m in
do
or
air h
and
ler
tran
sfo
rmer
TRA
NSF
ORM
ER
POW
ER P
LUG
HEA
TER
KIT
PLU
GTo
ind
oo
rai
r han
dle
r ci
rcu
it b
oar
d
WH
ITE
BLA
CK
GREY
RED
YELLOW
BLACK
RE
D
BLA
CK
RE
D
BLA
CK
BLA
CK
YE
LLO
W
BLA
CK
RED
BLACK
OR
AN
GE
BR
OW
N
BLA
CK
RED
YELLOW
RE
D
GR
EY
RE
D
GR
EY
Figure 14. 3-Phase, 9kw & 15kw W.D.
14
3-P
has
e E
lect
ric
Hea
ter
Kit
, 480
V
4. If
th
e in
tern
al w
irin
g is
rep
lace
d, u
se o
nly
105
C c
op
per
wir
e o
f th
e sa
me
gau
ge.
1009
7720
09/1
5
FIE
LD W
IRIN
G
LEG
EN
D:
LOW
VO
LTA
GE
HIG
H V
OLT
AG
E
WIR
ING
DIA
GR
AM
H8H
KN
OT
ES
:1.
Th
e b
low
er m
oto
r sp
eed
set
tin
gs
are
no
t sh
ow
n h
ere.
See
th
e In
stal
lati
on
Inst
ruct
ion
s.2.
Dis
con
nec
t al
l po
wer
bef
ore
ser
vici
ng
.3.
Lin
e vo
ltag
e fr
om
th
e co
nta
cto
r sh
ou
ld b
e co
nn
ecte
d t
o t
he
circ
uit
bre
aker
th
rou
gh
th
e te
rmin
al s
crew
.
CIR
CU
ITB
RE
AK
ER
(Circ
uit B
reak
erin
Air
Han
dler
)
CO
NTA
CTO
R
L1 L2 L3
12
34
56
7
To In
door
Air
Han
dler
Circ
uit B
oard
LIM
IT
480V
From
Indo
or A
ir H
andl
er C
ircui
t Boa
rd
ELE
ME
NT
S
DC
RE
LAY
7 P
IN P
LUG
24V
BR
OW
NB
RO
WN
BLA
CK
YE
LLO
W
RE
D
BLA
CK
BLA
CK
BLA
CK
BLA
CK
BLA
CK
RE
D
RE
DR
ED
GR
EY
GR
EY
GR
EY
OR
AN
GE
RE
D
BLA
CK
WH
ITE
Figure 15. 3-Phase, 460V W.D.
15
INSTALLER: PLEASE LEAVE THESE INSTALLATIONINSTRUCTIONS WITH THE HOMEOWNER
10253230(Replaces 709774D)
Specifications & illustrations subject to change without notice or incurring obligations (12/18).O’Fallon, MO, © Nortek Global HVAC LLC 2018. All Rights Reserved.
